微信小程序实现菜单左右联动
本文实例为大家分享了微信小程序实现菜单左右联动的具体代码,供大家参考,具体内容如下
今天记录一个个人写的二级联动示例。
下面是效果图:
功能实现关键是使用控件scroll-view,下面直接上示例代码。
页面对应的js文件:
Page({ data: { select_index:0, scroll_height:0, left: [{ id: 1, title: '选项一' }, { id: 2, title: '选项二' }, { id: 3, title: '选项三' }, { id: 4, title: '选项四' }, { id: 5, title: '选项五' }, { id: 6, title: '选项六' }, { id: 7, title: '选项七' } ], right:[ { id: 1, title: '选项一', content:[ { title:"产品一" }, { title: "产品二" }, { title: "产品三" }, { title: "产品四" }, ] }, { id: 2, title: '选项二', content: [ { title: "产品一" }, { title: "产品二" }, { title: "产品三" }, { title: "产品四" }, ] }, { id: 3, title: '选项三', content: [ { title: "产品一" }, { title: "产品二" }, { title: "产品三" }, { title: "产品四" }, ] }, { id: 4, title: '选项四', content: [ { title: "产品一" }, { title: "产品二" }, { title: "产品三" }, { title: "产品四" }, ] }, { id: 5, title: '选项五', content: [ { title: "产品一" }, { title: "产品二" }, { title: "产品三" }, { title: "产品四" }, ] }, { id: 6, title: '选项六', content: [ { title: "产品一" }, { title: "产品二" }, { title: "产品三" }, { title: "产品四" }, ] }, { id: 7, title: '选项七', content: [ { title: "产品一" }, { title: "产品二" }, { title: "产品三" }, { title: "产品四" }, ] } ] }, // 右边scroll-view滑动事件 scroll:function(e){ var h = e.detail.scrollTop var scroll_height = 0; var select_index; for (var i = 0; i < this.data.right.length; i++) { if (scroll_height >= h){ select_index = i; break; } scroll_height += this.data.right[i].content.length * 64 + 48; } this.setData({ select_index: i, }); }, //左边点击事件 left_tap:function(e){ var scroll_height = 0; for (var i = 0; i < e.target.dataset.index;i++){ scroll_height += this.data.right[i].content.length * 64 + 48; } console.log(scroll_height) this.setData({ scroll_height: scroll_height, select_index: e.target.dataset.index, }); } })
页面对应的wxml文件:
<view class='main'> <view class='left'> <scroll-view scroll-y="true" scroll-with-animation="true"> <block wx:for="{{left}}" wx:for-index="index"> <view class='{{select_index==index?"active":""}}' data-index="{{index}}" bindtap='left_tap'>{{item.title}}</view> </block> </scroll-view> </view> <view class='right'> <scroll-view scroll-y="true" scroll-top="{{scroll_height}}" bindscroll="scroll" scroll-with-animation="true"> <block wx:for="{{right}}"> <view class='block'> <view style='background: lightgrey;'>{{item.title}}</view> <view class='list'> <block wx:for="{{item.content}}"> <view>{{item.title}}</view> </block> </view> </view> </block> </scroll-view> </view> </view>
注:纯个人编写,用于记录
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